In this week's edition of SmartWatch, sponsored by SanDisk, we take a look at some surprising first-quarter results from the nation's two largest wireless carriers. Until now, Verizon has managed to stay above the fray, as AT&T and T-Mobile engaged in a price war. However, given 1Q earnings, it appear Verizon will have to join the fight going forward, as AT&T added 625,000 postpaid connections compared with Verizon's 539,000.